The emergency generator set shall be capable of continuously operating under the appropriate site conditions which shall normally be a temperature range of 5 deg. C to 40 deg. C, relative humidity 100% and the altitude of the actual site.

Each essential item of equipment incorporated in the emergency generator set shall be to the latest edition of the relevant British Standard or alternative equivalent national orinternational standard. Full compliance with the current edition of the I.E.E. Wiring Regulations shall also be necessary. Petrol, kerosene and similar highly volatile liquid fuels are not acceptable.The emergency generator set shall have a minimum continuous full load rating of not less than the consumption of all fire service installations and fireman's lift(s) connected thereto, running simultaneously. Under all load conditions the output voltage and frequency shall be maintained for satisfactory operation of all fire service installations devices.

Adequate (not less than 600 mm) space all round units shall be provided for maintenance and cleaning. Adequate ventilation shall be provided for both combustion and cooling air. If fans are necessary to provide this air they shall operate at all times while the emergency generator set is running. The air supply and discharge shall be direct to outside air without any possible obstructions i.e. no fire, smoke or regulating dampers shall be fitted. Where the air supply and/or exhaust ductwork is not fully contained within the generator room but passes through adjacent compartments or units the ductwork shall be so constructed as to have the same F R P as the F R P required for either the generator room or the compartment through which it passes, whichever is the greater. Exhaust discharge of combustion products shall not cause a public nuisance and shall be in accordance with the guidelines and requirements of the Director of Environmental Protection.

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